山東正規(guī)鋼球服務(wù)介紹歡迎來電常州市飛鴿鋼球供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="高鉻球質(zhì)量指標(biāo) 高鉻球的含鉻量是大于等于10.0%。含碳量在1.80%和3.20%之間。根據(jù)國家標(biāo)準(zhǔn),高鉻球硬度必須不小于58hrc,沖擊值應(yīng)大于等于3.0j/cm2。若達(dá)此硬度高鉻球必須用高溫淬火和回火處"><meta name="keywords" content="山東正規(guī)鋼球服務(wù)介紹"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="siszlpg" class="twoCol"><div id="b3wvce8" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機械及行業(yè)設(shè)備</a>?<a href="http://www.cdcfah.com/cp/second-jxjxysb_zhoucheng/">軸承</a>?<a href="http://www.cdcfah.com/cp/third-zhoucheng_zcfsj/">軸承附屬件</a>?山東正規(guī)鋼球服務(wù)介紹歡迎來電常州市飛鴿鋼球供應(yīng)</p><div id="rqxu22c" class="leftbox clearfix"><h1>山東正規(guī)鋼球服務(wù)介紹歡迎來電常州市飛鴿鋼球供應(yīng)</h1><div id="apmel38" class="proBig"><div id="r78iz73" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/czfggq/637116691675156250/4628051.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="22t8pry" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/czfggq/637116691675156250/4628051.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="jd7ifzq" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>山東正規(guī)鋼球服務(wù)介紹</p><p><span>***更新：</span>2020-05-29 09:19:14</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="8md88yf" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">常州市飛鴿鋼球有限公司</a></p><p><span>聯(lián)系人：</span>楊虎</p><p><span>郵箱: </span>info_feige@163.com</p><p><span>電話: </span>13961220766</p><p><span>傳真: </span>0519_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0519-86200760</p><p><span>地址: </span>雪堰鎮(zhèn)夏墅村 </p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="jdphzqs" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="akc7qcu" class="box"><p><p> 高鉻球質(zhì)量指標(biāo) </p> <p> <br /> </p> <p> 高鉻球的含鉻量是大于等于10.0%。含碳量在1.80%和3.20%之間。根據(jù)國家標(biāo)準(zhǔn),高鉻球硬度必須不小于58hrc,沖擊值應(yīng)大于等于3.0j/cm2。若達(dá)此硬度高鉻球必須用高溫淬火和回火處理。目前國內(nèi)高鉻球淬火有兩種方法包括油淬火和風(fēng)力淬火。如果高鉻球測試硬度低于54HRC，就意味著它沒有經(jīng)過淬火處理。 </p> <p> <br /> </p> <p> 中鉻球質(zhì)量指標(biāo) </p> <p> <br /> </p> <p> 中鉻球規(guī)定含鉻量范圍從3.0%到7.0%,含碳量在1.80%和3，山東正規(guī)鋼球服務(wù)介紹.20%之間，山東正規(guī)鋼球服務(wù)介紹。它的沖擊值應(yīng)不小于2.0j/cm2。國家標(biāo)準(zhǔn)要求中鉻球硬度應(yīng)該大于等于47hrc，山東正規(guī)鋼球服務(wù)介紹。為確保質(zhì)量,中鉻球應(yīng)經(jīng)高溫回火處理消除鑄造應(yīng)力。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東正規(guī)鋼球服務(wù)介紹" src="http://tyunfile.71360.com/UploadFile/czfggq/637116691675156250/4628051.jpg"></div><p> 鋼球等溫淬火 </p> <p> 將奧氏體化鋼球加熱到320°C并在硝酸鉀的鹽浴中，等溫保持足夠長的時間，使之轉(zhuǎn)化為下貝氏體組織，然后取出在空氣中冷卻。下貝氏體組織的強度、硬度較高而韌性良好，提高了鋼球的綜合力學(xué)性能。等溫淬火減小了鋼球與淬火介質(zhì)的溫差，從而減小了淬火應(yīng)力，又由于貝氏體的體積比馬氏體小，而且鋼球內(nèi)外溫度一致，故淬火組織應(yīng)力也小。等溫淬火可以較好減小鋼球變形和開裂傾向。 </p> <p> 鋼球回火 </p> <p> 當(dāng)鋼球全淬成馬氏體再加熱到150°C-170°C回火時，隨著回火溫度升高，按其內(nèi)部組織結(jié)構(gòu)變化，分四個階段進(jìn)行： </p> <p> <br /> </p> <p> 1）馬氏體的分解；2）殘余奧氏體的轉(zhuǎn)變；3）碳化物的轉(zhuǎn)變；4）e相狀態(tài)的變化及碳化物的聚集長大． </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東正規(guī)鋼球服務(wù)介紹" src="http://tyunfile.71360.com/UploadFile/czfggq/637116691664667969/8313159.jpg"></div><p> 根據(jù)宏觀、微觀觀察分析及金相檢驗的結(jié)果可以確定： </p> <p> 鋼球是在安裝到軸承內(nèi)部后使用過程中開裂的，開裂方向均為材料軋制方向。 </p> <p> 鋼球心部存在有明顯的疏松條帶，帶狀碳化物超標(biāo)且表面含有氧、鈣、鎂等異常元素，另外，條帶均有深度，約0.25mm，由此確定鋼球心部存在縮孔殘余，屬于冶金缺點，這也是導(dǎo)致鋼球在使用過程中發(fā)生開裂的主要原因。 </p> <p> 鋼球的淬回火組織過熱使其脆性增大，降低了抗壓強度，使鋼球更容易發(fā)生開裂。 </p> <p> 結(jié)語 </p> <p> 送檢鋼球開裂是在軸承運轉(zhuǎn)過程中開裂的，是材料缺點和熱處理缺點兩者共同作用的結(jié)果，屬于缺點開裂；鋼球心部存在縮孔殘余和帶狀碳化物超標(biāo)為主因，熱處理淬、回火組織過熱使鋼球脆性增大也是導(dǎo)致鋼球開裂的原因之一。當(dāng)鋼球尺寸較小或斷口擠壓、磨損較嚴(yán)重時，無法確定材料軋制方向，也難以進(jìn)行常規(guī)的斷口分析，此時可以通過金相法，通過觀察缺點形貌與金相組織的關(guān)系找到開裂的主要原因。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東正規(guī)鋼球服務(wù)介紹" src="http://tyunfile.71360.com/UploadFile/czfggq/637116691620654297/8892577.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/77012.html</p></div></div></div></div></div><div id="bvnpmtq" class="page-right twoColRt"><div id="gqspriu" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="lvnpwy8" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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